This output type allows you to control a state of selected and configured outputs. When you change the “Group switch” state, it reflects on all grouped outputs. So, you can control several outputs by one command.
In the “Limit switch” mode, you can send any signal to the “Group switch” output, and the firmware switches off all grouped outputs. It is useful to link this output with an alarm input (for example, with a water leak sensor).
The configuration above allows you to control Output 2 and 3 using one switch connected to Input 1.
The firmware does not control the state of a pin assigned to Output 1 (P01 in this example). You can use any unused pin for the group switch.